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针对跨高度范围内大气密度对风机全压、流量和功率的显著影响,利用风机相似性原理得到了任意高度及任意转速条件下风机的全压、流量三维曲面数据和全压、功率三维曲面数据,对跨高度范围内的风机特性进行仿真分析,研究了高度与风机特性之间、相同高度下风机各个特性之间的变化关系。风机特性随运行高度的变化而变化,通过对跨高度风机在不同高度下的特性研究,在考虑大气密度变化的条件下,实现了风机效率的优化控制。
Aiming at the significant influence of atmospheric density on total pressure, flow and power of fans in the span of height, the three-dimensional surface data of total pressure, flow rate and total pressure and power of wind turbine at arbitrary height and arbitrary rotation speed are obtained by the principle of fan similarity. , The fan characteristics across the height range were simulated and analyzed, and the relationship between the height and fan characteristics and the characteristics of the fan at the same height was studied. The characteristics of the fan vary with the operating altitude. Through the study on the characteristics of the fan with different heights across the height, the fan efficiency is optimized under the conditions of the variation of the atmospheric density.